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74LVC821ADB 数据表(PDF) 6 Page - List of Unclassifed Manufacturers

部件名 74LVC821ADB
功能描述  10-bit D-type flip-flop with 5 V tolerant inputs/outputs; positive-edge trigger; 3-state
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制造商  ETC2 [List of Unclassifed Manufacturers]
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标志 ETC2 - List of Unclassifed Manufacturers

74LVC821ADB 数据表(HTML) 6 Page - List of Unclassifed Manufacturers

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9397 750 13276
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 11 May 2004
6 of 20
Philips Semiconductors
74LVC821A
10-bit D-type flip-flop with 5 V tolerant inputs/outputs
7.
Functional description
[1]
H = HIGH voltage level;
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition;
L = LOW voltage level;
l = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition;
Z = high-impedance OFF-state;
l = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition;
NC = no change;
X = don’t care.
8.
Limiting values
GND
12
ground (0 V)
CP
13
clock input (LOW-to-HIGH, edge-triggered)
Q9
14
3-state flip-flop output
Q8
15
3-state flip-flop output
Q7
16
3-state flip-flop output
Q6
17
3-state flip-flop output
Q5
18
3-state flip-flop output
Q4
19
3-state flip-flop output
Q3
20
3-state flip-flop output
Q2
21
3-state flip-flop output
Q1
22
3-state flip-flop output
Q0
23
3-state flip-flop output
VCC
24
supply voltage
Table 3:
Pin description …continued
Symbol
Pin
Description
Table 4:
Function table [1]
Operating mode
Input
Internal
flip-flops
Output
OE
CP
Dn
Qn
Load and read register
L
IL
L
L
hH
H
Load register and disable outputs
H
IL
Z
H
hH
Z
Hold
L
H or L
X
NC
NC
Table 5:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Max
Unit
VCC
supply voltage
−0.5
+6.5
V
IIK
input diode current
VI <0 V
-
−50
mA
VI
input voltage
[1]
−0.5
+6.5
V
IOK
output diode current
VO >VCC or VO <0 V
-
±50
mA


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